Dextre, the Canadian-built robot on the International Space Station, completes the first stages of practicing refueling with a dummy satellite, a job that could help reduce the orbiting junk pile above our planet.

The U.S. government's recent crackdown on Web sites offering fake brand-name products is an attempt to stem the torrent of bogus items available online. Here's how to spot bargains that are literally too good to be true.